$(document).ready(function(){
    $(".logo-imga").css("opacity","1");
    $(".logo-imgb").css("opacity","0");
    $("#main-nav h4").css("color","#333");
    $("#main-nav>ul:first").hoverDelay(function(){
        $(".banner-nav").css({"background":"rgba(238,238,238,1.0)","border-bottom":"1px solid #eee"});
        $(".logo-imga").css("opacity","1");
        $("#main-nav>ul>li>h4").css("color","#666");
        $("#main-nav>ul:first>li>h4").css("color","#333");
        $(".logo-imgb").css("opacity","0");
    },function(){
        $(".logo-imga").css("opacity","1");
        $(".logo-imgb").css("opacity","0");
        $("#main-nav>ul>li>h4").css("color","#333");
        $(".banner-nav").css({"background":"rgba(238,238,238,1.0)","border-bottom":"none"});
    })
})